You can use the 2.54 pin header on the board or the pad for power. When using the pad for power, the input voltage range is 4.5V-15V, and 3.3V can be output to the outside through the pin header.
The 5V pin voltage is the input voltage of the module.
Leads to all the pins, the pins next to the pin marked the label, with a reset button, power LED, and the program shows LED, small but perfectly formed.
Support SWIM debugging mode.
Burned in the test program, LED flash, allowing you to detect the motherboard is working properly.
Provide in IAR and STVD two development environments of operation log and routine operation of the library functions.
Routine timer, UART transmits routine, UART receives routines, clock switching routines, AD routines and so on.
